If it's urgent and you don't know Perl, it sounds like what you are trying to achieve is very ambitious. There is a steep learning curve to understanding perl internals ... depending on your background and experience, of course. To get started with perl internals, start with perlguts (and its See Also links). If you like books, Extending and Embedding Perl is the best one that I'm aware of.

If you give us more details on what it is you are trying to achieve, you will probably get more useful advice.